Methods of development of a three dimensional model of the normal female pelvic floor

The anatomy of the pelvic floor is complex and the structures interact in non-obvious ways to maintain continence. Thus, a visualizable model would help our understanding of this part of the body. The goal of this project was to establish the methods necessary to develop a static three-dimensional (3D) model of the normal female pelvic floor. An asymptomatic nulliparous twenty-three year old female with no urinary incontinence symptoms underwent a pelvic floor MRI scan. Manual segmentations were done of selected pelvic floor structures: bladder, urethra, vagina, uterus, cervix, levator ani, obturator externus, obturator internus, and pubic bone (Mimics, Materialise). 3 clinicians verified accuracy of the 3D models. With high-resolution scans, accurate segmentation of the structures was possible. Three-dimensional models of the female pelvic floor could enhance our understanding of anatomy. They can be used as tools for research and teaching, facilitating improved treatment of pelvic floor pathologies.